Discharge-gate for tanks.



y E. H. MUYLB. DISCHARGE GATE FOR TANKS.

APPLICATION FILED APR. 6, 1906.

Patented Jan. 26, 1915.

THE NGRRIS PETERS CO4. FHOTO-LITHO.. WASHINGTON, D. c.

E. H. MOYLE.

DISCHARGE GATE POR TANKS.

APPLIUATION FILED APR. 6, 1906.

`Patented Jan. 26, 1915.

2 SHEETS-SHEET 2.

W gm!! THE MORRIS PETERS CO., PHOTOALITHUA. WASHING TON. D. I:A

ortica EDWARD H. MOYLE, OF LOS ANGELES, CALIFORNIA.

DISCHARGE-GATE FOR TANKS.

Application led April 6, 1906.

To all 107mm t may concern Be it known that I, EDWARD H.MoYLn, a citizen of the United States, residing in the city of Los Angeles, county of Los Angeles, State of California have invented a new and useful Discharge-Gate for Tanks, of which the following is a specification.

This invention is intended particularly for use as a sand or slime discharging gate in connection with cyanid vats or tanks, and its main object is to provide a discharge gate or valve which will maintain a tight closure and in which the parts subject to wear can be readily adjusted to compensate for the wear and can be easily and cheaply renewed when necessary.

A further object of the invention is to minimize the amount of waste space in the gate passage or opening, so as to obviate the loss of values by material pocketed in said passage and discharged when the gate is opened. In this connection the invention provides means for displacing or lilling the gate opening by the gate-plug member when the'gate is closed, and for withdrawing the gate-plug member when the valve is opened, and an important feature of the invention is the provision of means for carrying the plug member after such withdrawal completely away from the gate opening, so as to clear the passage or exit from said opening in the discharge of the vat.

A further object of the invention is to effect this result by means of quick pivotal devices without the use of a slow acting device, such as screws.

Another object of the invention is to facilitate the fastening of the lter cloth in connection with the gate devices.

' The accompanying drawings illustrate the invention.

Figure 1 is a plan of the gate. Fig.`2 is a section thereof on the line c62- m2 Fig. 1. Eig. 3 is a vertical section on line s-ms in Fig. 2. Fig. 4 is a vertical section similar to F ig. 2, showing the gate plug withdrawn from the valve opening. Fig. 5 is a vertical section similar to Eig. 2, showing the gate parts swung clear down in open position for discharge. F ig. G is a cross section on line .fvg- Fig.V 4.

1 designatesA the ioor or bottom of a vat or tank, 2 the "bottom strips thereon, and 3 the filter medium or cloth extending over said strips. A hole et is formed in the bot- Specfication of Letters Patent.

Patented Jan., 26, 1915.

serial No. 310,287.

tom of the tank, and the valve gate frame consists of two rings 5, 6, the corner ring 6 having a flange 6 extending within this hole 4L, the said rings being perforated as at 7 to receive fastening bolts 8 which extend through the rings and through the bottom of the tank to fasten the parts together. The said rings 5, 6 are, in the case of a wooden bottomed tank, provided around each bolt receiving hole 7 with a raised cup or ring flange 9 adapted to penetrate the wood of the tank floor and prevent leakage of the tank contents through the boltreceiving hole. The gate or valve plug 10 is supported by a bridge or cross bar 11 pivoted to the valve frame 6 by a pin or bolt 12 extending through lugs 18 depending from said frame 6. Means are also provided on said frame for sustaining the other end of the cross bar or bridge 11, said means consisting of lugs 13, depending from the other side of the ring frame 6, and a wedge key 14E extending through openings 15 in said lugs and through an opening 16 in the said bridge or bar.

rl`he gate plug supporting bridge or cross bar 11 is formed with a longitudinal vertical slot 17, in which is mounted a valveoperating cam or eccentric 18, whose shaft 19 is mounted to turn in bearings 20 on the said bridge. The plug 10 is in the form of an inverted cup, or of a cylinder closed at its upper end, and having an outwardly extending flange 26 at its lower end, and said plug is formed interiorly with a cam surface or bearing 21 to receive and engage the eccentric 18, this bearing being arcshaped and being formed on the under surface of a central rib or flange 23 extending. diametrically of the gate-plug. The bearing faces of said bearing 21 and of the eccentric are preferably rounded in a transverse direction as shown at 25, or in other words, formed as parts of a spherical surface to enable lateral yielding or self-adjustment of the valve as hereinafter explained. rilhe gate-plug 10 has a downwardly extending arm 22, projecting from the central rib or flange 23, and extending lwithin the slot 17 in the bridge 11, so as to guide the plug in its vertical movement. The outwardly extending flange 2G of the plug 10 extends under the annular valve frame 6, and is provided with a groove 28 to receive the valve packing ring 29 formed, for example, of suitable fabric, this groove 28 being undercut so that when the packing is inserted therein it will be retained by its own compression.

The upper end of the gate plug is preferably tapered, as shown at 30, to facilitate entrance of the plug into the gate opening in the swinging movement of the gate on its center at 1Q. The shaft 19 of the valveoperating eccentric has one or more feathers or ribs 31 to engage corresponding grooves in the eccentric, the bearing 20 in the bar 11 being slotted as at 32 to enable passage of this rib when the parts are being assembled. Said shaft has at each end a squared portion. or wrench hold 33, these squared portions being disposed at an angle to one another, so that two wrenches placed thereon can be operated alternatively to produce continuous movement of the eccentric through a semi-rotation without interference from the overlying gate-plug.

The eccentric 18 has a transverse perforation 311 to receive a locking pin 35 when the gate is completely raised and the downwardly extending arm 22 of the gate-plug has a perforation 3G to receive said pin when the gate is to be swung down as a whole, as hereinafter described.

1n setting up the device, the ring 5 is placed in position on the bottom of the tank, and the ring 6 inserted from below and fastened by the bolts 8, the flange 6 of the ring 6 then extending up within the ring 5 above the floor 1 of the tank, forming an annular channel between flanges 5 and 6 on rings 5, 6. The filter cloth 3 is extended over the flanges 5, 6 and a clamping ring 38 placed thereon and clamped on the cloth, forcing it into the channel between the said flanges, thereby binding it in place. Bridge or cross bar 11 is then hung from the frame ring 6 by the pin 12, eccentric 18 is passed within slot 17 of said bar 11, and the shaft 19 passed through the bearings 20 and through the eccentric, the ribs 31 thereon engaging and passing through the slots 32 in one of the bearings 2O and entering into and tting corresponding slots in the eccentric. Pin 39 is then passed through the shaft 19 to hold the same from accidental lateral movement, it being understood that the ends of the ribs 31 on said shaft engaging with the side walls of the slot 17 in the bridge 11 prevent movement of said shaft in the other direction. rlhe gate-plug 10 can then be inserted with its bearing face 21 resting on the cam or eccentric 18, and with its arm 22 extending downwardly into the slot 17 in the bridge 11. The parts will then naturally hang in a position somewhat as shown in Fig. 5. In operation, the bridge 11 will be swung up to position shown in Fig. 4, and the key 14C passed through the openings in the bridge and supporting lugs 13; this key, which is wedge-shaped, being pushed plug is withdrawn, the flared upper end thereof being at the lower portion of the gate opening. When it is desired to close the gate, a wrench is placed on the wrench hold at one end of the shaft 19, and the said shaft thereby turned to cause the eccen- ".f

tric to raise the plug 10, and as the movement that can thus be produced is limited. another wrench is then placed on the other end of the shaft 19, and the latter thereby operated further to turn the eccentric through a complete semirotation to the position shown in Fig. 2, bringing the packing ring Q9 on the annular flangeQG of the gate-plug into tight engagement with the lower face of ring 6, which is provided at that point with seat Ll0 to receive the said packing ring. 1n this position the gateplug member occupies substantially all the space within the gate opening. The cam engaging parts are so shaped that when the gate-plug is fully raised, the cam will have slightly passed the dead center, so that the pressure of the gate and superincumbent material will tend to hold the eccentric in this position, the cam engaging portion preventing further movement of the cam in the same rotative direction.

1t will be noted that the gate-plug is supported on the cam or eccentric 18 in such manner that it can yield or vmove laterally by a rolling or pivotal action to a sufficient extent to enable it to come to its seat on the fixed gate ring, and to compensate for any inaccuracies or any difficulties in the surface of the gate seat, or any slight disarrangement or tilting of the parts. In opening the gate, the procedure is the reverse to that above described, the locking pin 35 being removed from the eccentric and inserted through opening 36 in the arm 22 of the gate-plug, the eccentric having previously been turned down to allow the gate plug 10 to drop to the lower part of the gate opening as shown in Fig. l. On then removing key 11i, the bridge 11 will turn on its pin 12, the gate parts falling to position shown in Fig. 5, in which they clear the gate opening for free discharge of the slime or sand from the tank. 'The pin 35 retains the gate plug and its operating cam in fixed relation with the carrier lever 11, when the parts are swung down. To insure this retention lever 11 has notches 11 to engage pin 35, said pin engaging in a hole arm 36 in arm 22 on the gate plug member.

What I claim is 1. A discharge gate comprising a frame having an opening, a bridgepivoted at one end to said frame and adapted to extend across the opening, inclined key means connecting the other end of said bridge to the frame to support the said bridge and adjust the height thereof, a gate plug member carried by and extending above the bridge and adapted to enter and fill the opening in the` frame, said gate plug member having an annular flange adapted to seat on the frame, and an eccentric rotatably mounted on said bridge and engaging with the plug member to force the same into said opening or to allow the plug to be retracted therefrom.

2. A gate comprising a ring frame, the opening within the ring forming a gate opening, a bridge pivoted at one side of the frame and adapted to extend across the opening, the outer end of the bridge having a key-receiving opening, and the ring frame having a projecting portion with a key-receiving opening, a wedge key entering in said openings to adjustably support said bridge, a cam member rotatably mounted on the bridge, the said cam member provided with means for manual operation, a gate-plug member having a portion provided with an opening and sliding in the bridge to guide the said member, said gate plug member also having a portion engaged by the cam member for operation of the gate plug member, and a locking pin engaging with said opening in the sliding portion and with the bridge to hold the cam member in position when the gate is open.

3. A gate comprising a frame having an opening, a bridge pivoted at one end of said frame to extend across said opening, means for engaging the other end of said bridge to hold the bridge in position across the opening, said means being provided with adjusting devices for adjusting the height of the bridge, a gate plug member carried by said bridge and adapted to close said opening, said gate plug member extending above the bridge, and an eccentric rotatably mounted on the said bridge intermediate the ends thereof and engaging the gate plug member to force the same into said opening, said gate plug member and eccentric having corresponding spherical engaging surfaces to enable accommodation of the gate plug member to its seat.

t. A gate comprising a frame having an opening, a bridge pivoted at one end of said frame to extend across said opening, means for engaging the other end of said bridge to hold the bridge in position across the opening, said means being provided with adjusting devices for adjusting the height of the bridge, a gate plug member carried by said bridge and adapted to close said opening, said gate plug member extending above the bridge, and an eccentric rotatably mounted on the said bridge intermediate the ends thereof and engaging the gate plug member to force the same into said opening, the pivot of the bridge being below the seat of the gate plug member and .substantially on a level with'the axis of rotation of the eccentric.

5. A gate comprising a frame having a central opening, a bridge pivotally attached to one side of said frame, adjustable means to detachably connect the free end of said bridge with the other side of said frame, a plug loose on said bridge and of slightly smaller diameter than the opening in said frame and having a guiding member, means to move said plug into and out of the opening in said frame, a pin to lock said plugmoving means against movement, when the valve is in closed position, and adapted to engage said guiding member so as to connect said plug with said bridge when moved to open position.

In testimony whereof, I have hereunto set my hand at Los Angeles, California this 29th day of March 1906.

EDWARD H. MO YLE.

In presence of VERNA A. TALBERT, ARTHUR P. KNIGHT.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

